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Artykuły w czasopismach na temat „Surface substrate”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 1 lutego 2022

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1

Kovalev, Alexander E., Alexander E. Filippov, and Stanislav N. Gorb. "Insect wet steps: loss of fluid from insect feet adhering to a substrate." Journal of The Royal Society Interface 10, no. 78 (January 6, 2013): 20120639. http://dx.doi.org/10.1098/rsif.2012.0639.

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Reliable attachment ability of insect adhesive pads is proposed to be due to pad secretion. It has been shown that surface roughness strongly reduces adhesion forces of insect pads. This effect has been explained by decreased contact area and rapid fluid absorption from the pad surface by rough surfaces. However, it remains unclear how the fluid flows on rough substrates having different roughness parameters and surface energy. In this paper, we numerically studied the fluid flow on rough substrates during contact formation. The results demonstrate that an increase in the density of the substr

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2

Chaky, J., K. Anderson, M. Moss, and L. Vaillancourt. "Surface Hydrophobicity and Surface Rigidity Induce Spore Germination in Colletotrichum graminicola." Phytopathology® 91, no. 6 (June 2001): 558–64. http://dx.doi.org/10.1094/phyto.2001.91.6.558.

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We investigated the relationship between physical characteristics of artificial surfaces, spore attachment, and spore germination in Colletotrichum graminicola. Surface hydrophobicity and surface rigidity were both signals for breaking dormancy and initiating spore germination, but spore attachment alone was not an important inducing signal. The presence of a carbon source overrode the necessity for a rigid, hydrophobic substrate for spore germination. Spore attachment was typically stronger to more hydrophobic surfaces, but certain hydrophilic surfaces also proved to be good substrates for sp

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3

Xie, Z. Y., C. H. Wei, L. Y. Li, J. H. Edgar, J. Chaudhuri, and C. Ignatiev. "Effects of Surface Preparation on Epitaxial GaN on 6H-SiC Deposited Via MOCVD." MRS Internet Journal of Nitride Semiconductor Research 4, S1 (1999): 281–86. http://dx.doi.org/10.1557/s1092578300002593.

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A comparison was made of 6H-SiC surfaces etched with H2, C2H4/H2, and HCl/H2, and the resulting crystal quality of epitaxial GaN films deposited on these substrates. To remove the many fine scratches and to smooth the rough surfaces typical of commercial SiC substrates, the Si-face 6H-SiC substrates were etched in H2, C2H4/H2, and HCl/H2 at 145 °C. GaN was subsequently deposited on these etched surfaces after first depositing a low temperature GaN buffer layer via metalorganic chemical vapor deposition (MOCVD). The surface morphologies after etching and after GaN deposition were characterized

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4

Steigmann, D. J., and R. W. Ogden. "Elastic surface—substrate interactions." Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences 455, no. 1982 (February 8, 1999): 437–74. http://dx.doi.org/10.1098/rspa.1999.0320.

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5

Lin, I.-Nan. "Surface acoustic wave substrate." Journal of the Acoustical Society of America 126, no. 2 (2009): 931. http://dx.doi.org/10.1121/1.3204337.

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6

Zhang, An Liang, and Yan Zha. "Transportation of Droplets within Two Substrates by Help of Surface Acoustic Wave." Applied Mechanics and Materials 160 (March 2012): 92–96. http://dx.doi.org/10.4028/www.scientific.net/amm.160.92.

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It is usually difficult to integrate all operation units of complicated biochemical analysis systems into a micro-fluidic substrate. A multi substrate micro-fluidic system (MSMS) is a good option, in which operation units can be integrated into two or more substrates. Thus, it is necessary to transport droplets between two substrates. In this paper, a new method for transporting droplets between two substrates has been proposed based on surface acoustic wave (SAW). It is composed of a 128°YX-LiNbO3 piezoelectric substrate (substrate 1) and an arc-shaped polymer. The arc-shaped polymer is seaml

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7

Слюсарь, Денис Витальевич, Владимир Петрович Колесник, Олег Николаевич Чугай, Леонид Васильевич Литовченко, Николай Петрович Степанушкин, Сергей Леонидович Абашин та Сергей Владимирович Олейник. "ВЛИЯНИЕ РАЗЛИЧНЫХ ФАКТОРОВ НА МОРФОЛОГИЮ ПОВЕРХНОСТИ ПОКРЫТИЙ ТИПА WC, ОСАЖДЕННЫХ ИОННО-ПЛАЗМЕННЫМ МЕТОДОМ". Aerospace technic and technology, № 6 (20 грудня 2018): 76–82. http://dx.doi.org/10.32620/aktt.2018.6.10.

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It was studied the morphology of the WС coatings’ surfaces formed by the ion-plasma method on the substrates of БрАЖ9-4 tinless bronze and 12Х18Н9Т stainless steel. Initially, the substrate had the same roughness. The coatings were formed by spraying a lot of cathodes-targets made of BA brand tungsten and ОСЧ 7-3 spectral-pure graphite. The coating thickness was 8 ... 9 μm. The scanning electron microscope РЭМ 106 investigated the surface morphology of various areas of both the substrates and formed coatings. It is revealed the features of the morphology of the substrates and WC coatings’ surf

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8

Czarnecki, Sławomir, Jerzy Hoła, and Łukasz Sadowski. "The Use of a 3D Scanner for Evaluating the Morphology of a Sandblasted Concrete Surface." Key Engineering Materials 662 (September 2015): 193–96. http://dx.doi.org/10.4028/www.scientific.net/kem.662.193.

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The possibility of the non-destructive testing of concrete surface morphology by means of a new-generation 3D laser scanner is presented. The test results for a reference concrete substrate surface and a sandblasted concrete substrate surface are reported. The effect of sandblasting on the morphology of the concrete surfaces of the substrates is highlighted. The results are presented as three-dimensional images and the values of the morphology parameters are compared in a table.

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9

Lukauskaitė, Raimonda, Algirdas Vaclovas Valiulis, Olegas Černašėjus, and Jelena Škamat. "RESEARCH INTO NI-CR-SI-B COATING SPRAYED ONTO ALUMINIUM SUBSTRATE USING THE METHOD OF PLASMA SPRAY / NI-CR-SI-B DANGOS, UŽPURKŠTOS ANT ALIUMINIO SUBSTRATO PLAZMINIO PURŠKIMO BŪDU, TYRIMAS." Mokslas - Lietuvos ateitis 6, no. 4 (February 4, 2013): 546–49. http://dx.doi.org/10.3846/mla.2012.89.

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The article deals with Ni base coatings deposited on aluminium substrate applying the method of plasma spray. The purpose of the conducted research is to improve the physical and mechanical properties of coatings on the surface of aluminium alloy work pieces. Spraying on aluminium alloys encounters serious problems, and therefore this work analyses the ways to make the situation more favourable. Before spraying, the surfaces of substrates were modified employing chemical and mechanical pre-treatment methods. The aim of pre-treating aluminium alloys was to remove oxide layers from the aluminium

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10

Stockdale, Bill. "Substrate Materials Micromachining and Surface Considerations." JALA: Journal of the Association for Laboratory Automation 4, no. 2 (May 1999): 35–39. http://dx.doi.org/10.1177/221106829900400208.

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Subject material presented describes substrate materials and their processing as key elements in microsystems technology manufacturing (MST) for Biochips (DNA arrays), Electronic MEMS (Micro-Electro-Mechanical) Devices and electro-optics. Material choices are primarily glass, quartz and silicon, each of which may require mechanical features and exact surface finishes to enable design function and manufacturing. This paper will address some basic approaches to determining what substrates require for specific designs and manufacturing processes.

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11

Syafiq, A., B. Vengadaesvaran, A. K. Pandey, and Nasrudin Abd Rahim. "Superhydrophilic Smart Coating for Self-Cleaning Application on Glass Substrate." Journal of Nanomaterials 2018 (December 3, 2018): 1–10. http://dx.doi.org/10.1155/2018/6412601.

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In general, superhydrophilic coating on glass substrate possesses water contact angle (WCA) below 10° and contains high self-cleaning properties in outdoor environment as compared to noncoated glass substrate panels. In this study, the superhydrophilic coating behavior on glass substrate has been developed. The micro- and nanosized titanium dioxide (TiO2) particles have been utilized to improve the surface roughness, and the polypropylene glycol (PPG) has been utilized to increase the surface energy of glass substrates. The wettability of coating surface shows the coating possess water contact

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12

Aleksandrovych, M., G. Castanet, S. Burian, F. Lemoine, D. Lacroix, and M. Isaiev. "Effect of Surface Nano-Texturing on Wetting Properties: Molecular Dynamics Study." Ukrainian Journal of Physics 65, no. 9 (August 26, 2020): 817. http://dx.doi.org/10.15407/ujpe65.9.817.

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Molecular dynamics simulations describing the equilibrium shape of a nanodroplet located on the solid substrate are presented for the cases of a “cylindrical water droplet” on silicon substrates. Several examples of the structuration of the solid substrate surface are simulated, i.e.: atomistic flat substrate and substrates with ordered nanopillars and nanopores. The adhesives forces between molecules of the substrate and the fluid are modified to change the wettability. Three wetting configurations are considered in this work for the smooth surface: (i) hydrophilic (0 = 30∘), (ii) hydrophobic

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13

ul Hassan, Jawad, Axel Meyer, Semih Cakmakyapan, Ozgur Kazar, Jan Ingo Flege, Jens Falta, Ekmel Ozbay, and Erik Janzén. "Surface Evolution of 4H-SiC(0001) during In Situ Surface Preparation and its Influence on Graphene Properties." Materials Science Forum 740-742 (January 2013): 157–60. http://dx.doi.org/10.4028/www.scientific.net/msf.740-742.157.

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The evolution of SiC surface morphology during graphene growth process has been studied through the comparison of substrate surface step structure after in-situ etching and graphene growth in vacuum. Influence of in-situ substrate surface preparation on the properties of graphene was studied through the comparison of graphene layers on etched and un-etched substrates grown under same conditions.

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14

Lin, Bo, Chen Zheng, Qingying Zhu, and Fang Xie. "Surface-induced phase transitions in thin films of dendrimer block copolymers." e-Polymers 20, no. 1 (March 2, 2020): 76–84. http://dx.doi.org/10.1515/epoly-2020-0009.

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AbstractThe phase morphologies and phase transitions of dendrimer block copolymer thin films confined between two homogeneous, planar hard substrates had been investigated by a three-dimensional real space self-consistent field theory (SCFT). From the perspectives of property and strength of the preferential substrate, when the film system confined within neutral substrates, the thinner film was easier to take the undulated and perpendicular cylinder phases. For the attractive preference of the substrate on block segment A, the polymer films tended to take the surface-wetting structures that w

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15

Žigon, Jure, Mirko Kariž, and Matjaž Pavlič. "Surface Finishing of 3D-Printed Polymers with Selected Coatings." Polymers 12, no. 12 (November 26, 2020): 2797. http://dx.doi.org/10.3390/polym12122797.

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Surface treatment of 3D-printed objects with coatings, besides protection against environmental influences, offers the improvement of visual appearance of the printed elements. In order to design an optimum surface system, the physical and chemical properties of polymers surfaces should be well-known. In the present study, 3D-printed samples of acrylonitrile-butadiene-styrene, poly(lactic acid) and poly(lactic acid) with wood flour additive were coated with three different types of coating, namely solvent borne alkyd coating, water borne acrylic coating and coating made of acrylonitrile-butadi

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16

Pawlak, Jakub, Antoni Żywczak, Jarosław Kanak, and Marek Przybylski. "Surface-Step-Induced Magnetic Anisotropy in Epitaxial LSMO Deposited on Engineered STO Surfaces." Materials 13, no. 18 (September 17, 2020): 4148. http://dx.doi.org/10.3390/ma13184148.

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Changes in stoichiometry, temperature, strain and other parameters dramatically alter properties of LSMO perovskite. Thus, the sensitivity of LSMO may enable control of the magnetic properties of the film. This work demonstrates the capabilities of interface engineering to achieve the desired effects. Three methods of preparing STO substrates were conducted, i.e., using acid, buffer solution, and deionized water. The occurrence of terraces and their morphology depend on the preparation treatment. Terraces propagate on deposited layers and influence LSMO properties. The measurements show that a

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17

Hosoda, Naoe, and Stanislav N. Gorb. "Underwater locomotion in a terrestrial beetle: combination of surface de-wetting and capillary forces." Proceedings of the Royal Society B: Biological Sciences 279, no. 1745 (August 8, 2012): 4236–42. http://dx.doi.org/10.1098/rspb.2012.1297.

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For the first time, we report the remarkable ability of the terrestrial leaf beetle Gastrophysa viridula to walk on solid substrates under water. These beetles have adhesive setae on their feet that produce a secretory fluid having a crucial role in adhesion on land. In air, adhesion is produced by capillary forces between the fluid-covered setae and the substrate. In general, capillary forces do not contribute to adhesion under water. However, our observations showed that these beetles may use air bubbles trapped between their adhesive setae to walk on flooded, inclined substrata or even unde

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18

HOU, QINGRUN, and J. GAO. "INFLUENCE OF SUBSTRATE TREATMENTS ON MORPHOLOGY AND ADHESION OF CARBON COATINGS ON QUARTZ." Modern Physics Letters B 10, no. 30 (December 30, 1996): 1501–5. http://dx.doi.org/10.1142/s021798499600170x.

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The influence of different treatments of quartz substrate on morphology and adhesion of carbon coatings was studied. The surfaces of quartz substrates were abraded by using fine and coarse abrasive papers respectively to develop rough surface features. Adherent carbon coatings with different surface roughness were obtained. In order to grow adherent carbon coatings with very smooth surfaces, a silicon intermediate layer was grown by means of electron beam evaporation. Carbon coatings deposited on the intermediate layers were adherent to the quartz substrates.

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19

Xu, Fugang, Mengren Xuan, Zixiang Ben, Wenjuan Shang, and Guangran Ma. "Surface enhanced Raman scattering analysis with filter-based enhancement substrates: A mini review." Reviews in Analytical Chemistry 40, no. 1 (January 1, 2021): 75–92. http://dx.doi.org/10.1515/revac-2021-0126.

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Abstract Surface enhanced Raman is a powerful analytical tool with high sensitivity and unique specificity and promising applications in various branches of analytical chemistry. Despite the fabrication of ingenious enhancement substrate used in laboratory research, the development of simple, flexible, and cost-effective substrate is also great important for promoting the application of SERS in practical analysis. Recently, paper and filter membrane as support to fabricate flexible SERS substrates received considerable attentions. Paper-based SERS substrate has been reviewed but no summary on

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20

Okano, Koji, Kenkichi Kitahara, and Eiji Ushizawa. "Surface Disclinations on Modified Substrate." Japanese Journal of Applied Physics 33, Part 1, No. 11 (November 15, 1994): 6262–67. http://dx.doi.org/10.1143/jjap.33.6262.

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21

Liu, Juhua. "Substrate Integrated Surface-Wave Antenna." IEEE Transactions on Antennas and Propagation 67, no. 8 (August 2019): 5221–30. http://dx.doi.org/10.1109/tap.2019.2916574.

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Jones, S. H., L. K. Seidel, K. M. Lau, and M. Harold. "Patterned substrate epitaxy surface shapes." Journal of Crystal Growth 108, no. 1-2 (January 1991): 73–88. http://dx.doi.org/10.1016/0022-0248(91)90355-9.

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Koguchi, Hideo. "Adhesion Analysis Considering Surface Energy and Surface Stresses." Key Engineering Materials 297-300 (November 2005): 1736–41. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.1736.

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A new formulation for an adhesive force between a substrate and an indenter is presented. The boundary condition taking into account surface stresses is used for the present analysis. The surface stress is originated from surface energy. A paraboloidal indenter is pressed to the substrate, and then adhesion occurs between both surfaces. Surface energy and surface stress will vary at the adhesion surface, and then the surfaces deform in a concave way. An attractive force occurs to keep the contact of two adhesion surfaces. In the present paper, an effect of surface stress on the adhesive force

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Akbari, Mahmood, Mohammed Kamruddin, Razieh Morad, and Malik Maaza. "Electrical Tunability of Surface Tension of Vertical Graphene Nanosheets." MRS Advances 5, no. 44 (2020): 2291–98. http://dx.doi.org/10.1557/adv.2020.209.

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ABSTRACTThe contact angle is a material property determined by the surface tensions between substrate, liquid and the air. In this study, the surface wettability of vertical graphene nanosheets (VGNs) which are carbon nanostructures consisting of a few layers of graphene sheets vertically standing on the substrates, were developed by applying different voltages on the substrate. The contact angle of the water droplet on VGNs/Cu decreased from 123° to 16° with increasing the applied voltage which indicated the hydrophobic and hydrophilic transition of VGNs surfaces. It is anticipated that this

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25

Savin, Alexander V., and Yuriy A. Kosevich. "Modeling of One-Side Surface Modifications of Graphene." Materials 12, no. 24 (December 12, 2019): 4179. http://dx.doi.org/10.3390/ma12244179.

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We model, with the use of the force field method, the dependence of mechanical conformations of graphene sheets, located on flat substrates, on the density of unilateral (one-side) attachment of hydrogen, fluorine or chlorine atoms to them. It is shown that a chemically-modified graphene sheet can take four main forms on a flat substrate: the form of a flat sheet located parallel to the surface of the substrate, the form of convex sheet partially detached from the substrate with bent edges adjacent to the substrate, and the form of a single and double roll on the substrate. On the surface of c

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26

Zhu, Cong Rong, Qin Xu, Ju Long Yuan, Dong Hui Wen, and Bing Hai Lv. "Experimental Study on the Ultraprecision Lapping Technology of the Copper Substrates for Alloy Films." Key Engineering Materials 359-360 (November 2007): 349–54. http://dx.doi.org/10.4028/www.scientific.net/kem.359-360.349.

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To obtain the amorphous alloy films with superior properties by method of electrochemical deposition, the accuracy requirement for the copper substrates for Alloy Films is extraordinarily strict. The ultraprecision lapping technology for the copper substrate employing polyurethane polishing pad and flannel pad is studied in this paper, surface roughness, material removal rate and change process of surface construction of copper substrates are discussed. The influences of the different lapping parameters on the surface roughness, material removal rate and the influences of lapping load on coppe

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Linehan, D. S., E. P. Kvam, L. Hou та M. W. McElfresh. "Control of epitaxial growth orientation in YBa2Cu3O7−δ films on vicinal (110) SrTiO3 substrates". Journal of Materials Research 13, № 10 (жовтень 1998): 2791–99. http://dx.doi.org/10.1557/jmr.1998.0383.

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Films of Yba2Cu3O7−δ (YBCO) were grown on (001), exact and vicinal (110), and (111) SrTiO3 single crystal substrates by pulsed laser deposition, and evaluated by x-ray diffraction and scanning force microscopy (AFM). It was observed that the YBCO was always epitaxially aligned to the substrate with the [001] (c-axis) parallel to a substrate cube axis direction. For the exact (001), (110), and (111) surfaces, there were one, two, and three orientations, respectively. For the vicinal (110) surfaces, however, there was usually only one discernible c-axis orientation, corresponding to a single {01

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Ferraris, Sara, Sergio Perero, and Graziano Ubertalli. "Surface Activation and Characterization of Aluminum Alloys for Brazing Optimization." Coatings 9, no. 7 (July 23, 2019): 459. http://dx.doi.org/10.3390/coatings9070459.

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Brazing of Al-alloys is of interest in many application fields (e.g., mechanical and automotive). The surface preparation of substrates and the in depth investigation of the interface reaction between aluminum substrates and brazing materials is fundamental for a proper understanding of the process and for its optimization. The interaction between two aluminum based substrates (Al5182 and Al6016) and two studied brazing materials (pure Zn and for the first time ZAMA alloy) has been studied in simulated brazing condition in order to define the best surface preparation conditions and combination

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Xing, Juan, Xianchao Pan, Jinfeng Wang, and Yanfeng Luo. "Substrate chemistry regulates the surface phase separation of polyurethane films." Functional Materials Letters 10, no. 05 (October 2017): 1750063. http://dx.doi.org/10.1142/s1793604717500631.

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The effect of substrate chemistry on surface phase separation of polyurethane films were investigated by using self-assembled monolayer (SAM) with chemically different modifications, i.e. hydroxy (–OH) and methyl (–CH3) end groups. Results showed that hydrophilic (–OH) and hydrophobic end groups (–CH[Formula: see text] could respectively promote the aggregation of hard and soft segments at polyurethane–substrate interface, which further regulates the phase separation of polyurethane surface that contacts the substrate. The aggregation of hard segments tended to enhance the surface smoothness o

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Graeber, Gustav, Thomas M. Schutzius, Hadi Eghlidi, and Dimos Poulikakos. "Spontaneous self-dislodging of freezing water droplets and the role of wettability." Proceedings of the National Academy of Sciences 114, no. 42 (September 25, 2017): 11040–45. http://dx.doi.org/10.1073/pnas.1705952114.

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Spontaneous removal of liquid, solidifying liquid and solid forms of matter from surfaces, is of significant importance in nature and technology, where it finds applications ranging from self-cleaning to icephobicity and to condensation systems. However, it is a great challenge to understand fundamentally the complex interaction of rapidly solidifying, typically supercooled, droplets with surfaces, and to harvest benefit from it for the design of intrinsically icephobic materials. Here we report and explain an ice removal mechanism that manifests itself simultaneously with freezing, driving gr

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Stark, Alyssa Y., and Stephen P. Yanoviak. "Adhesion and Running Speed of a Tropical Arboreal Ant (Cephalotes atratus) on Rough, Narrow, and Inclined Substrates." Integrative and Comparative Biology 60, no. 4 (June 13, 2020): 829–39. http://dx.doi.org/10.1093/icb/icaa078.

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Synopsis Arboreal ants must navigate variably sized and inclined linear structures across a range of substrate roughness when foraging tens of meters above the ground. To achieve this, arboreal ants use specialized adhesive pads and claws to maintain effective attachment to canopy substrates. Here, we explored the effect of substrate structure, including small and large-scale substrate roughness, substrate diameter, and substrate orientation (inclination), on adhesion and running speed of workers of one common, intermediately-sized, arboreal ant species. Normal (orthogonal) and shear (parallel

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Augulis, R., R. Valiokas, B. Liedberg, and R. Rotomskis. "Atomic Force Microscopy of Self-Assembled Nanostructures of TPPS₄ on SAM Substrates." Solid State Phenomena 97-98 (April 2004): 195–200. http://dx.doi.org/10.4028/www.scientific.net/ssp.97-98.195.

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The adsorption of organic molecules on solid surfaces is one of the fundamental processes for the development of molecular-based nanodevices. Here we focus on the adsorption and ordering of the TPPS4-based J-aggregates on silicon and gold as well as on self-assembled monolayer (SAM) surfaces. The SAMs used for the experiments were based on the chemisorption of thiol containing compounds onto gold. Long ω-substituted alkanethiols are spontaneously assembled on gold to form highly ordered and densely packed layers with controllable chemical and physical properties. TPPS4 J-aggregates were disper

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Okamoto, Takeshi, Yasuhisa Sano, Kazuma Tachibana, Kenta Arima, Azusa N. Hattori, Keita Yagi, Junji Murata, Shun Sadakuni, and Kazuto Yamauchi. "Abrasive-Free Planarization of 3-Inch 4H-SiC Substrate Using Catalyst-Referred Etching." Materials Science Forum 679-680 (March 2011): 493–95. http://dx.doi.org/10.4028/www.scientific.net/msf.679-680.493.

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Catalyst-referred etching (CARE) is an abrasive-free planarization method. We used 3-inch and 2-inch 4H-SiC (0001) 4° off-axis substrates to investigate the processing characteristics that are affected by the substrate diameter. The surface roughness of the 3-inch substrate was extremely smooth over the whole substrate. The surface roughness and removal rate of the 3-inch substrate were approximately the same as those of the 2-inch substrate.

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Satyanarayan and K. N. Prabhu. "Solder Joint Reliability of Sn-Cu and Sn-Ag-Cu Lead-Free Solder Alloys Solidified on Copper Substrates with Different Surface Roughnesses." Materials Science Forum 830-831 (September 2015): 265–69. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.265.

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In the present work, the bond strength of Sn-0.7Cu, Sn-0.3Ag-0.7Cu, Sn-2.5Ag-0.5Cu and Sn-3Ag-0.5Cu lead free solders solidified on Cu substrates was experimentally determined. The bond shear test was used to assess the integrity of Sn–Cu and Sn–Ag–Cu lead-free solder alloy drops solidified on smooth and rough Cu substrate surfaces. The increase in the surface roughness of Cu substrates improved the wettability of solders. The wettability was not affected by the Ag content of solders. Solder bonds on smooth surfaces yielded higher shear strength compared to rough surfaces. Fractured surfaces r

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Mandrile, Luisa, Andrea Giovannozzi, Alessio Sacco, Gianmario Martra, and Andrea Rossi. "Flexible and Transparent Substrates Based on Gold Nanoparticles and TiO2 for in Situ Bioanalysis by Surface-Enhanced Raman Spectroscopy." Biosensors 9, no. 4 (December 17, 2019): 145. http://dx.doi.org/10.3390/bios9040145.

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Flexible and transparent substrates are emerging as low cost and easy-to-operate support for surface-enhanced Raman spectroscopy (SERS). In particular, in situ SERS detection approach for surface characterization in transmission modality can be efficiently employed for non-invasive analysis of non-planar surfaces. Here we propose a new methodology to fabricate a homogenous, transparent, and flexible SERS membrane by the assistance of a thin TiO2 porous layer deposited on the PDMS surface, which supports the uniform loading of gold nanoparticles over large area. The substrate was first characte

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Changwu Lü, Changwu Lü, Jiajia Wang Jiajia Wang, Xiaoyi Lü Xiaoyi Lü, and Zhenghong Jia Zhenghong Jia. "Silver particles deposited on porous silicon as surface-enhanced Raman scattering active substrate." Chinese Optics Letters 12, s1 (2014): S12401–312404. http://dx.doi.org/10.3788/col201412.s12401.

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Satyanarayan and K. N. Prabhu. "Wetting Characteristics of Sn-0.7Cu Lead-Free Solder Alloy on Copper Substrates." Materials Science Forum 710 (January 2012): 569–74. http://dx.doi.org/10.4028/www.scientific.net/msf.710.569.

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In the present work, the effect of surface texture on wetting characteristics of lead-free solder Sn-0.7Cu on copper substrates have been investigated at 298°C. The wetting tests were carried out using FTA 200 (First Ten Angstrom) dynamic contact angle analyzer. The surface texture of copper substrate significantly affected the wetting properties of Sn-0.7Cu solder alloy. Contact angles of about 30° were obtained on Cu substrate having smooth surface texture (Ra = 0.0155µm). On other hand contact angles on rough copper surface texture (Ra = 1.1194µm) were reduced to 20°. The contact angles dec

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Deng, Chuyun, Wanyun Ma та Jia-Lin Sun. "Fabrication of Highly Rough Ag Nanobud Substrates and Surface-Enhanced Raman Scattering ofλ-DNA Molecules". Journal of Nanomaterials 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/820739.

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Raman scattering signals can be enhanced by several orders of magnitude on surface-enhanced Raman scattering (SERS) substrates made from noble metal nanostructures. Some SERS substrates are even able to detect single-molecule Raman signals. A novel silver nanobud (AgNB) substrate with superior SERS activity was fabricated with a solid-state ionics method. The AgNB substrate was formed by tightly collocated unidirectional 100 nm size silver buds, presenting a highly rough surface topography. Distinct SERS signals of singleλ-DNA molecules in water were detected on AgNB substrates. AgNB substrate

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Januś, M., K. Kyzioł, S. Kluska, J. Konefał-Góral, A. Małek, and S. Jonas. "Plasma Assisted Chemical Vapour Deposition – Technological Design Of Functional Coatings." Archives of Metallurgy and Materials 60, no. 2 (June 1, 2015): 909–14. http://dx.doi.org/10.1515/amm-2015-0228.

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Abstract Plasma Assisted Chemical Vapour Deposition (PA CVD) method allows to deposit of homogeneous, well-adhesive coatings at lower temperature on different substrates. Plasmochemical treatment significantly impacts on physicochemical parameters of modified surfaces. In this study we present the overview of the possibilities of plasma processes for the deposition of diamond-like carbon coatings doped Si and/or N atoms on the Ti Grade2, aluminum-zinc alloy and polyetherketone substrate. Depending on the type of modified substrate had improved the corrosion properties including biocompatibilit

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Börner, Richard, Michael Penzel, Thomas Junge, and Andreas Schubert. "Design of Deterministic Microstructures as Substrate Pre-Treatment for CVD Diamond Coating." Surfaces 2, no. 3 (September 17, 2019): 497–519. http://dx.doi.org/10.3390/surfaces2030037.

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The coating of highly stressed components with chemical vapor deposition (CVD) diamond can extend their lifetime. In particular, the combination of steel substrates with diamond layers would find many applications in industrial production. However, there are some challenges, for example, the high mismatch in the thermal expansion between steel and diamond, which commonly leads to the delamination of the coating. Thus, a pre-treatment of the substrate surface is needed. Particle blasting has been established in some studies as a suitable process. However, apart from particle residues in the sur

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Panitchakan, H., and Pichet Limsuwan. "The Properties of Al₂O₃ Films Deposited onto Al₂O₃-TiC and Si Substrates by RF Diode Sputtering." Applied Mechanics and Materials 313-314 (March 2013): 126–30. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.126.

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The Al2O3 films were deposited onto Al2O3-TiC and Si (100) substrates by RF sputtering technique by varying powers sputter target, substrate bias voltages and fixed process pressure 25 mTorr which aim to achieve high deposition rate and investigated film properties onto different types. Result showed significant power sputter target to deposition rate both substrates and film properties depend on type of substrate. The power sputter target at 8kW and substrate bias voltage at -150 V is optimum deposition condition to provide deposition rate is 53.97nm/min for Al2O3-TiC substrate and 51.50nm/mi

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TAKAHASHI, N., T. ZHANG, M. SPANGENBERG, D. GREIG, T. H. SHEN, S. CORNELIUS, E. A. SEDDON, and J. A. D. MATTHEW. "SPIN-RESOLVED PHOTOELECTRON SPECTROSCOPY OF ULTRATHIN Fe FILMS ON GaAs(001)." Surface Review and Letters 09, no. 02 (April 2002): 693–98. http://dx.doi.org/10.1142/s0218625x02002816.

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Thin epitaxial Fe films were grown on singular and vicinal GaAs(001) substrates, and their magnetic and electronic structures were investigated by synchrotron-based spin-resolved and spin-integrated photoelectron spectroscopy with different Fe thickness. There were two types of substrates: one was a Si-doped n-type GaAs(001) surface with doping concentration of 2 × 1018 cm -3 (singular substrate), and the other was orientated by 3° toward the (111)A direction (vicinal substrate). Spin polarization of the secondary electron peak at different growth stages of Fe coverage for the singular substra

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Joseph, Benny, and C. S. Menon. "Studies on the Optical Properties and Surface Morphology of Cobalt Phthalocyanine Thin Films." E-Journal of Chemistry 5, no. 1 (2008): 86–92. http://dx.doi.org/10.1155/2008/102948.

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Thin films of Cobalt Phthalocyanine (CoPc) are fabricated at a base pressure of 10-5m.bar using Hind-Hivac thermal evaporation plant. The films are deposited on to glass substrates at various temperatures 318, 363, 408 and 458K. The optical absorption spectra of these thin films are measured. The present studies reveal that the optical band gap energies of CoPc thin films are almost same on substrate temperature variation. The structure and surface morphology of the films deposited on glass substrates of temperatures 303, 363 and 458K are studied using X-ray diffractograms and Scanning Electro

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Kojima, Kazutoshi, Keiko Masumoto, Sachiko Ito, Akiyo Nagata, and Hajime Okumura. "Development of Homoepitaxial Growth Technique on 4H-SiC Vicinal Off Angled Substrate." Materials Science Forum 778-780 (February 2014): 125–30. http://dx.doi.org/10.4028/www.scientific.net/msf.778-780.125.

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We have investigated key factors for controlling the polytype and surface morphology of 4H-SiC homoepitaxial growth on less than 4ooff-axis substrates. In addition, we characterized the crystal quality and surface quality of the epitaxial layer of an entire 3-inch vicinal off angled substrate. The results suggested that the control of surface free energy, control of the vicinal off angle itself, and high temperature growth, is highly important in controlling the surface morphology and polytype stability of the epitaxial layer grown on a vicinal off angled substrate. We also obtained a high-qua

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Priestley, Rodney D., Manish K. Mundra, Nina J. Barnett, Linda J. Broadbelt, and John M. Torkelson. "Effects of Nanoscale Confinement and Interfaces on the Glass Transition Temperatures of a Series of Poly(n-methacrylate) Films." Australian Journal of Chemistry 60, no. 10 (2007): 765. http://dx.doi.org/10.1071/ch07234.

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We use fluorescence from dye-labelled polymer to measure the glass transition temperatures (Tgs) across single-layer films and near surfaces and silica interfaces in bilayer films for a series of poly(n-methacrylate)s. With nanoscale confinement, the average Tg across a film supported on silica increases for poly(methyl methacrylate) (PMMA), decreases for poly(ethyl methacrylate) (PEMA) and poly(propyl methacrylate), and is nearly invariant for poly(iso-butyl methacrylate) (PIBMA). These trends are consistent with the relative strengths of local perturbations to Tg caused by surfaces and subst

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HAGA, KOICH, TOETSU SHISHIDO, KAZUO NAKAJIMA, and TAKAHIRO MATSUNAGA. "HOMO-EPITAXIAL GROWTH ON ZnO SUBSTRATE BY MO-CVD USING (C5H7O2)2." Surface Review and Letters 14, no. 04 (August 2007): 783–87. http://dx.doi.org/10.1142/s0218625x07010263.

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High quality homo-epitaxial ZnO films were grown on Zn -terminated surfaces of ZnO (0001) single-crystal substrates with high-temperature annealing and Ar + ion etching. These films were prepared by low-pressure MO-CVD using zinc acetylacetonate ( C 5 H 7 O 2)2 and oxygen as source materials. High quality ZnO (0001) substrate was synthesized by the hydrothermal technique. The atomically flat surface without scratches was obtained by high temperature annealing at 800°C–1300°C in oxygen atmosphere. Ar + ion etching for the surface of ZnO substrates was critically important to the growth of ZnO f

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ACUÑA, SERGIO M., MARIA A. SANCHEZ, and PEDRO G. TOLEDO. "SURFACE FORCES AND ADHESION BETWEEN ELECTROLYTIC COPPER CATHODE SURFACES AND MICROSPHERE SURFACES OF GLASS AND POLYSTYRENE IN AQUEOUS ELECTROLYTE SOLUTIONS." International Journal of Nanoscience 03, no. 04n05 (August 2004): 499–510. http://dx.doi.org/10.1142/s0219581x04002309.

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Surface forces and adhesion between electrolytic copper cathode surfaces and sphere surfaces of glass and polystyrene were measured with an atomic force microscope (AFM) in water and in aqueous medium containing 104, 10-3 and 10-2 M sodium chloride at ambient temperature. Two types of copper surfaces were considered, oxidized and just-polished. Copper surfaces are submicroscopically rough and so at "contact", a film of intervening fluid separates substrate from probe. At close proximity, the interaction of the copper surfaces with either of the two probes is repulsive and such that extending a

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Ramli, J., D. N. Awang Sh’ri, N. A. Alang, Yusof Nor Imrah, and M. M. Mahat. "Effects of Surface Pretreatment to the Properties of Aluminum Oxide (Al₂O₃) Cutting Tool Coated Amorphous Graphite." Advanced Materials Research 463-464 (February 2012): 369–74. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.369.

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Hydrofluoric Acid (HF) and sand blasting have been incorporated together with chemical surface pretreatment (HF) for the surface pretreatment of the Al2O3 cutting tool. Amorphous graphite was deposited on the substrates by using PVD technique. Morphological observation by Scanning Electron Microscope (SEM), surface roughness and topography of the substrate by using Atomic Force Microscopy (AFM) was done in order to investigate the effect of surface pretreatment on the substrates. Critical load required in scratching the substrate’s surface after coating by different surface pretreatment was ev

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Zhang, Y., H. Fan, W. Huang, and Y. Chen. "Droplets Atop a Wrinkled Substrate." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 11 (April 27, 2010): 2459–67. http://dx.doi.org/10.1243/09544062jmes2069.

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Liquid droplets atop both isotropically and anisotropically patterned substrate surfaces are investigated experimentally. The patterns are realized by means of elastic wrinkling/buckling of a thin layer of gold coated atop polystyrene shape memory polymer. Static contact angles are measured, and images showing the shapes of droplets are captured. The results obtained from isotropically patterned substrates suggest that surface roughness has no apparent effect on the static contact angles in this study. However, atop anisotropically patterned substrates, both the static contact angles and shape

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O’Donnell, Mary Kate, and Stephen M. Deban. "The Effects of Roughness and Wetness on Salamander Cling Performance." Integrative and Comparative Biology 60, no. 4 (July 20, 2020): 840–51. http://dx.doi.org/10.1093/icb/icaa110.

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Synopsis Animals clinging to natural surfaces have to generate attachment across a range of surface roughnesses in both dry and wet conditions. Plethodontid salamanders can be aquatic, semi-aquatic, terrestrial, arboreal, troglodytic, saxicolous, and fossorial and therefore may need to climb on and over rocks, tree trunks, plant leaves, and stems, as well as move through soil and water. Sixteen species of salamanders were tested to determine the effects of substrate roughness and wetness on maximum cling angle. Substrate roughness had a significant effect on maximum cling angle, an effect that

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